Weird motion blur problem

[lichtmaschine]

Hello,

I got a problem with motion blur and the new release of Phoenix FD : As you can see in the image, Vray switches suddenly from "no motion blur" to "way too much and weird motion blur" when you change the shutter speed of the Vray Camera.
What could be the problem ?
Using Max 2012 / Vray 2.40.01 / Phoenix FD 2.10.00

[Ivaylo Katev]

what is the rendering mode, mesher or implicit surface? we found a motion blur problem if the mesher is used, but it happens in a different way. could you share a scene?

[lichtmaschine]

I just sent the file to your support, the rendering times are also incredibly high. Although it`s a very simple scene with pretty much the basic settings, something must be wrong in general.